FLUENT NHIBERNATE PDF

It has existed since and recently has been developed entirely by the community, without any sponsor or umbrella company. Entity Framework Core is the. In the beginning, it was part of. NET 3. As part of the. NET Core initiative, it was totally rebuilt now targeting.

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Rather than writing XML documents. This allows for easy refactoring, improved readability and more concise code. Fluent NHibernate also has several other tools, including: Auto mappings - where mappings are inferred from the design of your entities Persistence specification testing - round-trip testing for your entities, without ever having to write a line of CRUD Full application configuration with our Fluent configuration API Database configuration - fluently configure your database in code Fluent NHibernate is external to the NHibernate Core , but is fully compatible with NHibernate version 2.

Why replace HBM. While the separation of code and XML is nice, it can lead to several undesirable situations. Repetitive mappings - NHibernate HBM mappings can become quite verbose if you find yourself specifying the same rules over again. How does Fluent NHibernate counter these issues? As for the repetition, Fluent NHibernate has a conventional configuration system, where you can specify patterns for overriding naming conventions and many other things; you set how things should be named once, then Fluent NHibernate does the rest.

Length Getting the source Our source-control is Git using Github , and you have two options available. You can find out more about that on the github guides site: forking and pull requests. If you have Ruby installed: The first time you build, you should run InstallGems. For more options for building, see the details of our rake script. Your first project All the source can be found in the main Fluent NHibernate solution, in the Example.

FirstProject project. The company has a couple of stores, each with products in some products are in both stores, some are exclusive , and each with employees.

First, create a console application and reference the FluentNHibernate. You can see the project structure that I used to the left. Create the following classes in your Entities folder. Secondly, all the properties are marked virtual; this is because NHibernate creates "proxies" of your entities at run time to allow for lazy loading, and for it to do that it needs to be able to override the properties.

Add this ; Products. This has an Id and a Name, along with a collection of Products that are stocked in it, as well as a collection of Employees in the Staff list that work there.

All the following mappings should be created inside the Mappings folder. For NHibernate users, that means it automatically creates the generator element as identity. NHibernate users: Map is equivalent to the property element and References to many-to-one. So HasMany is creating a one-to-many relationship with Employee one Store to many Employees , which is the other side of the Employee.

Store relationship. Inverse on HasMany is an NHibernate term, and it means that the other end of the relationship is responsible for saving. All on HasManyToMany tells NHibernate to cascade events down to the entities in the collection so when you save the Store, all the Products are saved too.

Table sets the many-to-many join table name. The HasManyToMany is setting up the other side of the bidirectional many-to-many relationship with Store. SaveOrUpdate barginBasin ; session. SaveOrUpdate superMart ; transaction.

CreateCriteria typeof Store. Write for the various relationships on a Store but you can see it in the full code. This is the Main method from your Program. Configure API to configure our application. You can see more examples on this in the Fluent configuration wiki page. Database SQLiteConfiguration. UsingFile "firstProject. You can learn more about the database configuration API in the Database configuration wiki page.

To do that, we add a call to Mappings in our configuration. ExposeConfiguration BuildSchema. Exists DbFile File. Pages

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Rather than writing XML documents. This allows for easy refactoring, improved readability and more concise code. Fluent NHibernate also has several other tools, including: Auto mappings - where mappings are inferred from the design of your entities Persistence specification testing - round-trip testing for your entities, without ever having to write a line of CRUD Full application configuration with our Fluent configuration API Database configuration - fluently configure your database in code Fluent NHibernate is external to the NHibernate Core , but is fully compatible with NHibernate version 2. Why replace HBM.

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How to work with Fluent NHibernate in C#

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